blob: f892dd5a179ee3a37ecdb2ee58caed546dd07a8b [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/rand_util.h"
#include <windows.h>
// #define needed to link in RtlGenRandom(), a.k.a. SystemFunction036. See the
// "Community Additions" comment on MSDN here:
#define SystemFunction036 NTAPI SystemFunction036
#include <NTSecAPI.h>
#undef SystemFunction036
#include <algorithm>
#include <limits>
#include "base/logging.h"
#include "starboard/types.h"
namespace base {
void RandBytes(void* output, size_t output_length) {
char* output_ptr = static_cast<char*>(output);
while (output_length > 0) {
const ULONG output_bytes_this_pass = static_cast<ULONG>(std::min(
output_length, static_cast<size_t>(std::numeric_limits<ULONG>::max())));
const bool success =
RtlGenRandom(output_ptr, output_bytes_this_pass) != FALSE;
output_length -= output_bytes_this_pass;
output_ptr += output_bytes_this_pass;
} // namespace base